Telephone set.



s. s. 'SONNBB'ORN TELEPHONE SET. APPLICATION" ILED 00121, 1907.

v Patented Sept. 15, 1908;

UNITED sTArEs soL s. soNNEBoEN, or NEW YORK, N. Y.

" rELEPHoiv-E snr.

No. soar/ 96.

Speecation of Letters Patent.4

Iatented Sept. 15, 1908.

` Application liled. October 1 ,.1907. ySerial No; 395,393.

. i To all whomit concern:

Be a known that i, sot s. SONNEBORN, .a citizenA of the United. States, residing' at the city of New-York, in the :borough of Brook- Telephone Sets, of which the following .is a full, clear,andexact description."v

My invention relates to-a vform of tele-.1

common usev andv comprises a cylindrical standard 4or column supporting a hinged'- transmitter and a switchfhook at itsfupper end. Thisarrangement is in universal use,'j and forthis reason, any-.telephoneinecliaii1- ism departing widely therefrom lin general appearance-.or manner of use, is'objectiom able, since it does not accord With the'estabusing public. At the same time, the linstrument dees not give. perfect ,'.satisf'a'ction in many cases,.par ticularly those above enumerated.

It is the main object of my present invention to .provide a telephone instrument noft departing widely from the above form of ordinary standard desk telephone, butwhich i overcomes the difliculties mentioned, being sensitiveenough for `all purposes and re* quirements.

In carrying out my invention, I provide two ear pieces, which has .the d'oubleadover, such small sizes di receiver ordinarily'.

used with a head band are not as -eificient or sensitive as the type'liaving a longitudinally extending magnet. By the present invenlyn and State'of New York, have invented certain new and useful Improvements vinl lished habits or customs 'of the telephonetion, the eiilciency and sensitiveness of the latter type of receiver are retained, while, at the same time, the double ear pieces are veryv light andnot burdensome or uncomfortable.

AIn the drawings: Figure 1 is a side elevation partly in section eta desk telephone embodying the principles of my invention; Fig. 2 is a sectional view. illustrating a slightly modified construction.

z, .Referrin to the drawings inwhich like parts 'are esignated by the same reference sign, 1 indicates a cylindrical coluininstan'dard or supporting fraine of a desk telephone having the usual hinged transmitter 2 at its upper end. l

v 3 indicates a switch hook which may be of the ordinary construction controlling the circuits-of the telephone. inl thi-...usual manner. The lower end of the column or standard 1 isenlarged or'extended to form a base l on which the .apparatus may rest with the necessary firmness and stability.` `The interior ol' this base or i enlargement 1Lv constitutes a chamber or cavity which I utilize in carrying out 'the present invention. Y

The features thus far described are of substantially the ordinary form. in desk tele phpnes, and in themselves constitute no part of 4the present invention.

Within the column o1' standard 1, there is 4inserted a telephone-receiver 4, the essential characteristic of. which is a longitudinally cx- -tending magnet or magnets 5 embedded in the insulating body 6. The insulating body 6 has an external form adapted to be inserted tightly in the' tubular interior of the column or standard 1.

7 indicates a flared or extended portion of the insulating body 6 at the loweiI end thereof and which is threaded 'at 8 to receive a closed cap laiialogous to the ordinary cap of a telophone ieceivei', except that it is made witho'ut'the usual central perioiation.

10' designates a diaphragm clamped between cap 9 and ilange 7. The magnet or magnets 5 have polar extensions 11. on which are i ound bobbins 12 in the telephone circuit.

13 indicates a plate at the bott'oiiL ol" the enlarged portion 1a of the column ci' stand ardil, and serving to tightly close the interior cavity ther of. y

The space between the cap l) and the diaphra m 1 0 communicates witlitlie bent pipe 14 leading through the wall ofithe standard or column 1 at the yoint 15.

16 denotes a flexible or rubber'tube at the iro . ness are obtained, is not objectionable.

end of which is a forked pipe 17, the urpose of which is to divide the passage of t el tube 16 into two se arate portions respectively joined to the tubular extensions or pipes 18.

f 19 indicates the ear made inthe form of har rubber or similarly resonant cups, with extending protuberances 20 to which the pipes 18 are connected.

-21 indicates a resilient steel band which may be'used in some cases to support the ear cups or pieces 19 in proper relation against both ears of the telephone user.

The column or standard 1 isof sufficient size to receive a telephone receiver having longitudinal magnets of such large and ample proportions as to insure great efficiency and sensitiveness. Inasniuch as the standard with' its attached parts reposes on a desk 'or support in use, the extra weiglit'of the receiver by which its eliiciency and sensitivee The use of the double ear pieces 19 divides the sound of the receiver between both ears of the telephone user which also is advanta' geous, notonly from the standpoint of easy hearing, but from certain hygienic considerations as well. But although easy hearing is insured, the iisu al foim and characteristics of a desk telephone aie not changed, nor are there provided heavy, uncomfortable o'r burdensoiiie parts to be put upon the tele hone subscribers head, as is required witi the fornis of apparatus in which separate telephone receivers directly constitute the ear pieces. A further advantage lies in the fact that there is no hard rubber shell liable to bc broken as is the case with the ordinary telephone receiver only supported by a loose cord connection. It is evident that all the parts of the receiver aie fullyv protected by the transmitter frame in which they are embedded.

. In Fig. 2, I have illustrated a slight modification, the essential characteristicof which is that the telephone receiver casing virtually forms the standard or column of the apparatus. The telephone magnet or magnets are designated 5 and carry pole pieces 11 and bobbins 12 acting on a diaphragm 10l in a manner similar to the form of the invention shown in Fig. 1; The body of the telephone receiver is, however, differently formed and is designated 4X. This part 4X forms the colunin or standard of an apparatus analogous ieces conveniently.

to the part, 1 of Fig. 1. If desired', the magnets5 may be supported in the-body 4 of the receiver by. a lbed 24 of plastic or insulating substance. The enlarged base 1a of the instrument may be threaded on to the part 4X at the point 25 in this formofthe invention. A further dierence lies in the arrangement of the tube or pipe 15 which, in this case, extends from the cavity containing the ma net bobbins, etc., instead of the cavity adjacent the cap 9. The soundvibrations are, of course, transmitted equally well from either side of the diaphragm. `The feature of the tube 16 and the ear pieces 19, etc., may be the same as in the construction of Fig. 1.

It is evident that the essential principles of my invention can be embodied in many diffe'rent types of apparatus or telephone including those fixed upon or attached to their supporting surfaces. I do not therefore desire to be limited or restricted to the particular details of construction shown.

1. In a desk telephone, a hollow standard or column having a transmitter and a switch hook, a telephone receiver forming part of said standard, a pair of ear cups or pieces, and tubular connections therefrom to y said receiver.

In a desk telephone, a hollow standard or column having a transmitter and a switch hook, a telephone receiver having a longitudinal magnet co-axially contained in and formingv part of said standard or column, an ear cup or piece, and tubular connections therefrom to said receiver.

3. In a desk telephone, a hollow standard or column having a transmitter and aswitch hook, said standard being enlarged at its base to form a correspondingly enlarged interior cavity, a telephone receiver havinga longi-v tudinal magnet co-axially contained in and formingpart of said standard, said receiver having its diaphragm end-within said en,- larged portion of the standard, an ear cup or piece, and tubular connections therefrom to said receiver.

In witness whereof, I subscribe my signa ture, in the presence of two witnesses.

soiJ s.` soNNEBoBN Vitnesses: I

E- A. OBRIG, K M. GoRnoN, 

